isobel04 isobel04

08-11-2017
Mathematics

contestada

solve 20=4(2m-1) showing the method

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alexsonica alexsonica

08-11-2017

4(2m-1) = 20
8m - 4 = 20
8m = 20 + 4 = 24
m = 24:8 = 3

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